diff --git a/go.mod b/go.mod
index 57c36246..4ae4409c 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/gesellix/couchdb-cluster-config/v17 v17.3.1
 	github.com/go-kit/log v0.2.1
 	github.com/golang/protobuf v1.5.3
-	github.com/okeuday/erlang_go/v2 v2.0.5
+	github.com/okeuday/erlang_go/v2 v2.0.6-develop.2
 	github.com/prometheus/client_golang v1.15.1
 	github.com/prometheus/client_model v0.4.0
 	github.com/prometheus/exporter-toolkit v0.10.0
diff --git a/go.sum b/go.sum
index e5694df7..7f4e1e92 100644
--- a/go.sum
+++ b/go.sum
@@ -37,8 +37,8 @@ github.com/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zk
 github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f h1:KUppIJq7/+SVif2QVs3tOP0zanoHgBEVAwHxUSIzRqU=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
-github.com/okeuday/erlang_go/v2 v2.0.5 h1:GLv90a/7KhQlDUngcgLyNhP3IbmKnFvA0p2Rq/nLoKc=
-github.com/okeuday/erlang_go/v2 v2.0.5/go.mod h1:bUnKKmkI110+DM1rV59zPPqbcXp4yv18Fp2ofRwBmk4=
+github.com/okeuday/erlang_go/v2 v2.0.6-develop.2 h1:0Rhl4TzmKMB9lWHIrLIpJWyN80dpQo6skDnjuj7SGr4=
+github.com/okeuday/erlang_go/v2 v2.0.6-develop.2/go.mod h1:bUnKKmkI110+DM1rV59zPPqbcXp4yv18Fp2ofRwBmk4=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v1.15.1 h1:8tXpTmJbyH5lydzFPoxSIJ0J46jdh3tylbvM1xCv0LI=
diff --git a/lib/couch-util_test.go b/lib/couch-util_test.go
index 2b291d94..4ef77d8f 100644
--- a/lib/couch-util_test.go
+++ b/lib/couch-util_test.go
@@ -3,6 +3,9 @@ package lib
 import (
 	"encoding/json"
 	"log"
+	"os"
+	"path/filepath"
+	"strings"
 	"testing"
 )
 
@@ -36,3 +39,24 @@ func TestDecode2(t *testing.T) {
 		t.Errorf("expected %s to contain %d tuples", b, numberOfShards)
 	}
 }
+
+func TestDecode3(t *testing.T) {
+	example := filepath.Clean("../testdata/large_update_seq.txt")
+	data, err := os.ReadFile(example)
+	if err != nil {
+		t.Error(err)
+	}
+	updateSeq := strings.Trim(string(data), "\n\r ")
+	decoded, err := DecodeUpdateSeq(updateSeq)
+	if err != nil {
+		t.Error(err)
+	}
+
+	log.Printf("decoded:\n%v\n", decoded)
+
+	numberOfShards := 256
+	if len(decoded) != numberOfShards {
+		b, _ := json.Marshal(decoded)
+		t.Errorf("expected %s to contain %d tuples", b, numberOfShards)
+	}
+}
diff --git a/testdata/large_update_seq.txt b/testdata/large_update_seq.txt
new file mode 100644
index 00000000..6aca4779
--- /dev/null
+++ b/testdata/large_update_seq.txt
@@ -0,0 +1 @@
+g1AAAMsDeJzV3QfQHkUZAOAfEkQUDUVFVECQDgm3t3tbRGmCgihdQAVxKyE9IcEASQg1ShERRARUUJFgwYKIiCAWFEQEFTtIiRRBRJSuJn77v5vvm7vM3M14-e7fhZkwk5nMn4fd23vf3XffmzYyssbI5HFmZH89c56ebNRuh06feMg-B088YP6sieG30CQ5b8Y8PDfDdspce5zO5jh8NJqDde7MJDl_0jEz5to5M-S0SXrazHlGzpo1aYadO21kZGTNGeN7v46s6P1nRe-fKZPHqZEJszef3vu9tWlBlMV09f_gIWOWA2Z5CZMRajPLO8eQlpj_Aua_o5hxi88YxSBeZNyo1f-DGzBFS8x_APOfgJkB0wwVkjq9-n_wkEfm34D5N2BOOW8UYzQjDNVjhjEybZ-ZFwHzIjwzx94-iiFS5DI3yT0zLwDmhTDNFo9icmEoMbLzkclaYp4HzPMeMz6_51J4ZhzLVcFW_w8e8sg8B5jnYGROWmsUY3MqMpQnt5o9C5hnwwKwZBTDLSuEsZ2vZm2n2TOAeWZ0muFb8lGMQxxxUY8ZxjRri3kaME-XMBobgWX9ajYMTNul-V-A-RcszVPnjGKEk05blFxs9k_A_LOEob2lWZL0ME8B5qkShhCrnEkP8w_A_KOEQU5gLtOLmp8EzJNhaT4KUoDMcCbqF4BhvGfylpi_A-bvMDJzToX3DENSk_qX5v_1g4f80nwCME_AyJw2G54ZbYxy9ZlmjCnA3wDzN8As2h4CTW0sVbjzadYW8zhgHg9R83KYZjhXhnePabuaPQaYx8JqdjZMM0FJ1hDOxLia_RUwfw3T7HJYzZCk3NQvzTGOzKOAebQ0MlYXLMtJciPzCGAeCSOzE4wMc7in6XxkcEvMw4B5OCwAN4ZwRhHXe3Ou9h885BTgIcA8NJoCFBPGAyYrMEbp5TN_AcxfShhUZILi-mkW4x7AMsAsC8_MIbBv5jR3OL3Y7EHAPBhWswdDpllYwesxw4jN2o7MA4B5IOzOQKApi17W7Lrfa277zNwPmPvDM6NGMUUmM666f2baYu4DzH2AWWcXeGaYdY53v5q1jQD-DJg_h_OZRSE5yynFIrm0-V7A3FvC9B5vKmzROabtNLsHMPeUphm3hZC6PgIYxjRrm2n-CTB_CnsA2wAGSUtRfdQcY6b5R8D8ETAnXwkRgClMnnd_2NR2ZP4AmD-EQBM2zm1WGJLX75sNY2TaRs2_B8zvAbNwAWyca2IVr89nhhE1t51mvwPM78LIPAKrWZZb4-qX5hjzmd8C5rch0IR8RiOj_S5gaiPzG8D8JiwAsG9WOEozWv_MxLgA3A2Yu0OguR8kZ723prH175lhLABtI4BfA-bXEAHMeBRGRmXUue43NNo-M78CzK_CyNwE7xlpmcnrX5ox7gH8EjC_HA1nyJ0PAQYbjUh9HUCMKcBdgLmrhLFFQWzDyVmMmDsBcydgVkyA2MwwlJv6veYYMb8AzC9KGOuI7AUAyWHuAMwd5ZEpJFeqPtCMEfNzwPy8hGFMG0LqV7MY85nbAXN7iM02DodN2kpTH87EmM_8DDA_C--Zm2EPwOVYNsRmMW413QaY28I0WxciAG4l1_V7ADE-M7cC5tYSBhWGGt39S7PtNPspYH4akrPHYEeTOexE92eabReAnwDmJ-GZeWYUozTBmNZPsxjT5lsAc0vAbBXCGYYy6ZJLzn4MmB8HDAnl84hS1H1y1jaf-RFgfgT5zKwnITlThhmU3vbsDwHzwxLGCsklrV8AYsT8ADA_KGFclttc1qfNw8C0Xc1uBszNYXfmilAJKDFl3VfPth2Z7wPm-zAy0-GwCWWZ4qr74rm2Z5o3AeamEsa5AquGKyfDONNsG87cCJgbIZxZPjcsALnluvsUoC3me4D5XglT8N7_-YalOUbMDYC5ATDPbgnTTFhnGo4BY8R8FzDfLWEypYU16e0BXA-Y60sY5IyhtL5GM0bMdwDznRJGak5yXr-axYi5DjDXAeZWHe7PMCESXM2-DZhvlzDUKSJFeiNzLWCuLWGU1rmR6e0BfAsw3yphMmdpXnQ_Mm2Ts2sAc004OYMKDZ5jR0n9BboYi7S_CZhvhk3A6-AyUC9sFiy9C3TfAMw3wu7Mi7CjiXvBTEP5_DBSgLZR89cB83WImmfuG_IZbDLd_S2NtvnM1wDzNcBMvgoWAC0YzbqvamqLuRowV5cwhltKsvRuNn0VMF8NW03nQ2ymJM5s9wtA22fmK4D5SnlkJJUE1y8AMVbPfhkwXw5L810QAbiCKpte7cyXAPOlsDQXsABwwzPd_fZs23DmKsBcBeHMZQymWSE40ellmksBs7SEcRwbg9OrA7gSMFdCwek2e4dODZajhiONGDFfBMwXS5hebCYsTe_KyRWAuaKE4TkrDO--7URbzBcA84USRnHjjEgP83nAfB4wO54WdjSdonl6q9nnAPO5gDkTFgCrmUTpFQJdDpjLAyb0nSmoFDy9erPLAHNZCSMNz7MxeGm2jc0-C5jPhthsj7BvplhTQ5AYo-bPAOYzEDU7uNigCXfG1k-zGPsBfBown4aRWXBYuHKCncnql-YYq5ouBcylIWrGoRRYEJPVb5zHWAdwCWAugWl29EwINBmXeAy6m7SdZhcD5uKQNkORtmA5sia9ivNPAeZTpZFhmrqCp1ehcRFgLiphKMukk-lhPgmYTwJmymUQATDLdV6_cR4j5kLAXFjCcFGwwnbfE7BtOPMJwHwCwpktLoSXZo5yNAYtwdpiLgDMBSUMdZbpPL0D2vMBcz5gtoYmOlYylpn0Lmp_HDAfL2FyXlhl6vfNYsScB5jzShite4uzSu-A9mOA-Vh5muHCyIZAM0bMuYA5FxocPnDJKAYLmamGY8AYMR8FzEfLGNqbZw3VszFizgHMOSVMLmmGG4rnYsScDZizSxikJM_G4GJD2xTgLMCcFVKA0KoFUU4bes8OIwVoizkTMGeGtPm5cLURZUakdxfgI4D5SBiZq2FpJjSjDWeawzhsaov5MGA-HDAbwF6z6KXNpP4C3TAwbVOAJYBZEooaboBAkxZWNDQEifFu8xmAOSNsAl4cdmfyHKP6FCDGKyenA-b0MM2g8xxD2IgE-wGcBpjTSkUN1BGBGi4Dxbg7cypgTg39AC4O27NK46x-AYjxLsApgDmljMG4MdCM8S7AyYA5ObQF3zMszVrQBGOzxYBZXMJYonPFUjpsUif1flUnrYBvz4wv9lo_9DbLHecp5TJqkYcsqkK4KAp_pyEhyEIPWViFOKl4LlI6YVYLPGTBKhBFCFHd9zNrATnRQ07sQw66J9zIkDpvCPcjg5zgISdUITZXGW04VIoMcryHHF-FZFqZzCW1as33kPlViMwEEg0tjOM651cf8pAPBcjIuEXnhpbf2ClW_4zEVeevjvOQ4_qQk-ZDniJzgVD9eySuQlI1z0Pm9SGnLgNITrWj9fFWXHm9mushc_uQxSfC6XFmCMlSyhzVsR5ybB-ycCT0XpaY0JSuj6g5HjJnAFkejiYyhVVKZSNqtofMHqxaBoJGzZXW9d3j4qpMUrM8ZNZKyIRjZsEL0TrKG766GFctv5rpITMHIwIliSgnymbd1_G3GJEZHjKjPyKTScgQs94f7b43eYsQxf-91fSVIQpZsSx8mMAx03CBJ7JYy_-qplUh2gink7q_r6Z6yNQ-5GnYFpLIZVokFf1O8ZApVQgS0sqkusSrYzzkmCpE0N5wFCn17VOTPWRyFZIx4XKVVIZ4tIccvRJCj7sbYi2TSaRSKtJRzkNcFaIwFjlOavm1HmKrEG0yrFlKNWC93KkHMVVITlHOx2CDrkUYrz1ED2KtE2BEmBSW1WeIcZ3JK-Uhqg85-RRYfglXWKZUXKCkh8hBqhs6jAjhXEOqG1li9UEP-eBg8-HwEMY7ljW8RyJLdY_ykKMGqe7UcBVXU9fw8afIptYHPOQDg2fk9NC-DmWk4UvWkU2tIz3kyMGqdT8UrCkrdcO3xeK65qGO8JAj-hnidGgpzCRBnNeHKHEdVav3e8j7-5ApAgoIsGASd9-yrsWIvM9D3leFSG1ULyVJqOZevddD3rsyREEvLIRnhCiHeVJh_OEecngVInsrlk3rDPEwDzlsJSTfZGmAaJmJpDLEQz3k0CqEGEtzm1Ilt3qPh7ynCimURK7hHldkkEM85JBVphbDhDV02Y0McrCHHNyHbPg4vEdyhPKGzwZHdhh6kIcc1A9RFmwWPrCRy4zVP-xx9ddXB3rIgdURyZSmliZV5nSAhxxQhVjNmR6D-_Qtwvj9PWT_wdS6F1YtnKFCdP_1thbPyH4est8gjIdbdMwXPpikjt7e7SHvHhy9wTUNmWspXFJHb-_ykHcNRmRHgDhcSNd9q8YWz8i-HrJvFWKk0lx2n-q2qHx4p4e8c7AddBu8ELXEVHdfwtFiau3jIfsMVq0jYKfRZobr7juAtMgQ9_aQvQcP-8rvgGmCi-6_aNBiRN7hIe8YPCO7h95fwjrU_fLbYkTe7iFvH-TsF4RWWUgI1P0lmRYhyl4eslc_RNnhvnCrlDmbVEd2taeH7FmFWJZnNKk22eptHvK2PmT7pSGMxxKrpEZkDw_Zowox1umCJXUYuruH7F6FOJlZZpKqxN7NQ3arQrSjzmVJ5ey7esiufciBAFGKK1skVcKxi4fsUoX4L6-bIqmdxrd6yFurEIGl0yKp5fctHvKWKoT0Xoaq4Xg6spx9Zw_ZeRDGw0GPkkIUuvtO6y2Cxjd7yJsHkE1XVgchw-ufkcgyROEhYgDZFnZRCoTQGBQMtBgR7iF8cFthLzhnpzxDDRV0kY0I8xA2gFwLzwhT0uruP0jWAkI9hA4qH5bAe8QqaRpOdSObWoWHFH3IGeuFnUZeCJJSO0VFPIT0M8TjNwq7KM42bdBFds6OPQT3IdN2halFen-2oV93ZOfsuYfkVQiljBtRv_kQWc6OPAT1Q5Rdr4ecnWn_ye6UYq3MQ7IqhGeENLUaiQyyk4fs1Idsd39ommQpkkmlupM8ZFIVYhzz301ICTLRQyZWIRYpQ2RSqe6OHrJjFZKpnEua1MO-g4fsMDgMvTW0SaRENbTjjQyyvYdsX4VIiXPDk-r5sJ2HbFeFENf7N61alG09ZNtVRoQJZYvuC89ahPHbeMg2g_OREGtJhCjpvsVbi6Bxaw_ZulplyjWSuOj-HmKLw9CtPGSrQYa4Ava1dIF7K3Dnh6EtIFt6yJaDzQcoKTcYE9rQOyiuHnXqTR7ypv7UmjobXohGI4q677fdYkS28JAtBg_7HZCPEFkYUh-iRDYim3vI5tURMVrofAy-GtAC8kYPeWMVQnNVoIbD0Mggm3nIZoPj6QOgzIlYWzR8zDUyyKYesmkV4pTKFU-pH73axEM26ZeUL4FWCZrrXI7BsUILyBs85A0DyMxwWYwqIZMqzny9h7y-D1kKjcIUZUSl1brtdR7yuipEs1wUDbFWZJCNPWTjKkQ6i61LakRe6yGvrUJwLjR2Se2ibOQhG_UhT90QRoQbIpOCvMZDXlOFMOOKpstikUFe7SGvrkI0QblO6isA6lUe8qoqBBFHCtb9dlCLMH5DD9lwcMX1IggaJSNZw7cZIyuX3cBDNhikusfCm52jgo3B_ZEWI7K-h6w_SHWvgYc9d1Q0XN-LLGdfz0PWG0ytm2D5pa4gDd2cIssQJ3jIhH4YP-sW2PslijWVOUWWj7zSQ15ZhaBC4byhgi6yzYdXeMgrBg_7kZBYGVOIhgYvw5haLXYa1_WQdVcZkYxbUtQHjZEdT7_cQ14-gDwMQSO1mebdXwNvAXmZh7xsAHki9EXJERuDZ6RFiLKOh6zTD1GWTYKdRiE1S-vo7aUe8tIqhBPJlEvqoGdtD1m7D3l853CfnWiRVuXDSzzkJVUI4owhmlTBwFoeslYV4gpBecMGXWQQ_30FNb4KMZQK1tByJzLIOA8Z14c8zyAf6T3tsuHjqpFB1vSQNauQjGNO0mpvuIaHrLHKiEha8CKlVUuOqJGqwtisQGQIfRKm_A-WO5nR